ADC3422IRTQ25

Analog To Digital Converters (ADC) Overview

The ADC3422IRTQ25 is a quad-channel, 12-bit analog-to-digital converter (ADC) from Texas Instruments. It operates at a maximum sampling rate of 50 MSPS and utilizes a single 1.8-V supply. The device features a serial low-voltage differential signaling (LVDS) interface to reduce pin count and support high system integration density. Key performance metrics include a typical signal-to-noise ratio (SNR) of 70.4 dBFS and a spurious-free dynamic range (SFDR) of 87 dBc at an input frequency of 70 MHz. It incorporates internal dithering, a flexible input clock buffer with divide-by-1, -2, or -4 options, and supports multi-chip synchronization via the SYSREF input.

Analog To Digital Converters (ADC) Feature Summary

• Quad-channel architecture with 12-bit resolution and 50 MSPS sampling rate
• Ultra-low power consumption: 98 mW per channel at 125 MSPS equivalent scaling
• Serial LVDS output interface for reduced interconnect complexity
• Internal phase-locked loop (PLL) for bit clock generation

Analog To Digital Converters (ADC) Applications

• Multi-carrier, multi-mode cellular base stations
• Radar and smart antenna arrays
• Software-defined radios (SDRs)
• Communications test equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'Q25' against the manufacturer's current orderable addendum to confirm package availability and lead times. Ensure that the required documentation matches the revision level specified in the design specifications. Cross-reference the DigiKey part number 296-43675-2-ND for accurate distributor identification and stock status.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 50 MSPS sampling rate is sufficient for the application bandwidth. Compare total power dissipation (typically 228 mW to 305 mW) against thermal constraints. Verify compatibility with the system's digital logic levels, as inputs support both 1.8-V and 3.3-V CMOS. Consider the VQFN-56 package dimensions (8 mm x 8 mm) for PCB layout space requirements.

Analog To Digital Converters (ADC) Part Context

This device belongs to the ADC342x family, which includes variants with different sampling rates such as the ADC3421 (25 MSPS), ADC3423 (80 MSPS), and ADC3424 (125 MSPS). All members share pin-to-pin compatibility within the 12-bit resolution class and utilize the same VQFN-56 package. The family is designed for high-linearity applications requiring large dynamic range.

Analog To Digital Converters (ADC) Replacement Considerations

Direct substitutes within the same family include the ADC3421IRTQ25 (25 MSPS) and ADC3423IRTQ25 (80 MSPS), provided the sampling rate difference is acceptable. For higher performance requirements, the ADC34J22 series offers JESD204B interface compatibility but requires interface redesign.